/**
 * 文件流转blob对象下载
 *  @params data：二进制流
 *  @params type：文件类型
 *  @params fileName：文件名
 */
const typeToBlobType: any = {
    aac: 'image/audio/aac',
    abw: 'application/x-abiword',
    arc: 'application/x-freearc',
    avi: 'video/x-msvideo',
    azw: 'application/vnd.amazon.ebook',
    bin: 'application/octet-stream',
    bmp: 'image/bmp',
    bz: 'application/x-bzip',
    bz2: 'application/x-bzip2',
    csh: 'application/x-csh',
    css: 'text/css',
    csv: 'text/csv',
    doc: 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
    docx: 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
    eot: 'application/vnd.ms-fontobject',
    epub: 'application/epub+zip',
    exe: 'application/x-msdownload',
    gif: 'image/gif',
    htm: 'text/html',
    html: 'text/html',
    ico: 'image/vnd.microsoft.icon',
    ics: 'text/calendar',
    jar: 'application/java-archive',
    jpeg: 'image/jpeg',
    jpg: 'image/jpeg',
    js: 'text/javascript',
    json: 'application/json',
    jsonld: 'application/ld+json',
    mid: 'audio/midi audio/x-midi',
    midi: 'audio/midi audio/x-midi',
    mjs: 'text/javascript',
    mp3: 'audio/mpeg',
    mpeg: 'video/mpeg',
    mpkg: 'application/vnd.apple.installer+xml',
    odp: 'application/vnd.oasis.opendocument.presentation',
    ods: 'application/vnd.oasis.opendocument.spreadsheet',
    odt: 'application/vnd.oasis.opendocument.text',
    oga: 'audio/ogg',
    ogv: 'video/ogg',
    ogx: 'application/ogg',
    otf: 'font/otf',
    png: 'image/png',
    pdf: 'application/pdf',
    ppt: 'application/vnd.ms-powerpoint',
    pptx: 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
    rar: 'application/x-rar-compressed',
    rtf: 'application/rtf',
    sh: 'ima',
    svg: 'image/svg+xml',
    swf: 'application/x-shockwave-flash',
    tar: 'application/x-tar',
    tif: 'image/tiff',
    tiff: 'image/tiff',
    ttf: 'font/ttf',
    txt: 'text/plain',
    vsd: 'application/vnd.visio',
    wav: 'audio/wav',
    weba: 'audio/webm',
    webm: 'video/webm',
    webp: 'image/webp',
    woff: 'font/woff',
    woff2: 'font/woff2',
    xhtml: 'application/xhtml+xml',
    xls: 'application/vnd.ms-excel',
    xlsx: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
    xml: 'text/xml',
    xul: 'application/vnd.mozilla.xul+xml',
    zip: 'application/zip',
    '3gp': 'video/3gpp',
    '3g2': 'video/3gpp2',
    '7z': 'application/x-7z-compressed'
}

export const downloadFile = (data: any, type: string, fileName: string): void => {
    console.log(typeToBlobType[type], 'typeToBlobType')
    let blob = new Blob([data], { type: typeToBlobType[type] })
    // 获取heads中的filename文件名
    let downloadElement = document.createElement('a')
    console.log(blob, 'typeToBlobType')

    // 创建下载的链接
    let href = window.URL.createObjectURL(blob)
    downloadElement.href = href
    // 下载后文件名
    downloadElement.download = fileName
    document.body.appendChild(downloadElement)
    // 点击下载
    downloadElement.click()
    // 下载完成移除元素
    document.body.removeChild(downloadElement)
    // 释放掉blob对象
    window.URL.revokeObjectURL(href)
}